I need to get a spool of wire to actually wire some accersories in , I've never really done any wiring before so I guess you could say I am a newby. What is the best wire to use? Guage? What I have no clue? HELP SOON!!!! PLEASE!!!

Could I run it to the battery though? I have like a switch box out of a emergency vehicle i want to put in and i was going to wire the power on it right from the battery or would that be a terrible choice?